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6.0 Installation
This section contains information about installing and upgrading MapR software. It also contains information about how to migrate data and applications from an Apache Hadoop cluster to a MapR cluster.
Upgrading MapR Core or MEP Components
Depending on your current configuration, you may choose to upgrade the MapR version (MapR Core), ecosystem components, clients, or MapR Monitoring components.
Upgrading MapR Ecosystem Packs
Describes how to upgrade MapR Ecosystem Packs (MEPs), either as part of a MapR Core upgrade or to take advantage of a new MEP for the current version of MapR Core.
Preparing to Upgrade the MapR Ecosystem Pack
Complete these pre-upgrade steps for each ecosystem component in the MEP that you want to upgrade.
Pre-Upgrade Steps for Hive
Complete the following steps before you upgrade Hive with or without the MapR Installer.

MapR 6.0 Documentation

6.0 Installation
This section contains information about installing and upgrading MapR software. It also contains information about how to migrate data and applications from an Apache Hadoop cluster to a MapR cluster.
- Planning the Cluster
  Describes information and factors used in planning your cluster.
- Installing MapR and/or MapR Ecosystem Components
  Describes how to install MapR software and ecosystem components with the MapR Installer or without the MapR Installer.
- Installing the File Migration Service on the Edge Cluster
- Installing MapR-XD
  Describes how to install MapR-XD software with or without the MapR Installer.
- Installing MapR Data Fabric for Kubernetes
  This section describes how to plan for, install, and upgrade the MapR Container Storage Interface (CSI) Storage Plugin and MapR Data Fabric for Kubernetes FlexVolume Driver.
- Installing MapR in the Cloud
  Provides an overview of MapR cloud installer capabilities.
- Upgrading MapR Core or MEP Components
  Depending on your current configuration, you may choose to upgrade the MapR version (MapR Core), ecosystem components, clients, or MapR Monitoring components.
  - Upgrading MapR Core
    Describes the process of upgrading MapR Core.
  - Upgrading MapR Ecosystem Packs
    Describes how to upgrade MapR Ecosystem Packs (MEPs), either as part of a MapR Core upgrade or to take advantage of a new MEP for the current version of MapR Core.
    - Planning MapR Ecosystem Pack (MEP) Upgrades
      The set of ecosystem components that you run in the cluster must all belong to the same MEP.
    - Preparing to Upgrade the MapR Ecosystem Pack
      Complete these pre-upgrade steps for each ecosystem component in the MEP that you want to upgrade.
      - Pre-Upgrade Steps for Drill
        Complete the following steps before you upgrade Drill with or without the MapR Installer.
      - Pre-Upgrade Steps for Flume
        Complete the following steps before you upgrade Flume with or without the MapR Installer.
      - Pre-Upgrade Steps for HBase Client
        Complete the following steps before you upgrade HBase Client with or without the MapR Installer.
      - Pre-Upgrade Steps for Hive
        Complete the following steps before you upgrade Hive with or without the MapR Installer.
        Pre-Upgrade Steps for Tez
        Complete the following steps before you upgrade Tez with or without the MapR Installer.
      - Pre-Upgrade Steps for HttpFS
        Complete the following steps before you upgrade HttpFS with or without the MapR Installer.
      - Pre-Upgrade Steps for Hue
        Complete the following steps before you upgrade Hue with or without the MapR Installer.
      - Pre-Upgrade Steps for Impala
        Complete the following steps before you upgrade Impala with or without the MapR Installer.
      - Pre-Upgrade Steps for MapR Monitoring
        Complete the following steps before you upgrade MapR Monitoring Components with or without the MapR Installer.
      - Pre-Upgrade Steps for MapR-ES Tools
        Complete the following steps before you manually upgrade HPE Ezmeral Data Fabric Event Store Tools.
      - Pre-Upgrade Steps for Oozie
        Complete the following steps before you upgrade Oozie with or without the MapR Installer.
      - Pre-Upgrade Steps for Pig
        Complete the following steps before you upgrade Pig with or without the MapR Installer.
      - Pre-Upgrade Steps for Sentry
        Complete the following steps before you upgrade Sentry with or without the MapR Installer.
      - Pre-Upgrade Steps for Spark
        Complete the following steps before you upgrade Spark with or without the MapR Installer.
      - Pre-Upgrade Steps for Sqoop1
        Complete the following steps before you upgrade Sqoop1 with or without the MapR Installer.
      - Pre-Upgrade Steps for Sqoop2
        Complete the following steps before you upgrade Sqoop2 with or without the MapR Installer.
    - Upgrading the MapR Ecosystem Pack With the MapR Installer
      If the cluster that you want to upgrade was installed using the MapR Installer, you can use the MapR Installer to upgrade the MapR Ecosystem Pack (MEP).
    - Upgrading the MapR Ecosystem Pack Without the MapR Installer
      After you upgrade MapR core without using the MapR Installer, you need to upgrade ecosystem components with manual steps. First, verify that your repository is configured to use a MapR Ecosystem Pack (MEP) that is supported by your cluster version. Then, upgrade each component manually.
    - Finishing the MapR Ecosystem Pack Upgrade
      Complete the post-upgrade steps for each ecosystem component that was upgraded.
  - Preparing the Cluster for a Maintenance Update
    This section identifies how to prepare for applying either a minor update or a patch.
  - Performing a Maintenance Update
    Perform a maintenance update when you want to upgrade to a new patch version of MapR Core or apply a patch.
- Setting Up Clients
  Describes how to set up and use interfaces to a MapR cluster from a client computer.
- Setting Up the MapR Control System
  Describes how to configure and access the MapR Control System (MCS).
- Migrating to MapR
  Provides instructions for migrating business-critical data and applications from an Apache Hadoop cluster to a MapR cluster.
- Applying a Patch
  You can apply a patch by using the MapR Installer, by using the command line (a manual process), or by using a MapR Installer Stanza.

Pre-Upgrade Steps for Hive

Complete the following steps before you upgrade Hive with or without the MapR Installer.

About this task

You need to back up the metastore database in case an error occurs during the Hive upgrade. You also need to back up configuration files if you made configuration changes that you want to carry over to the next version.

Procedure

Back up the metastore database.
mysqldump -u<user> -p<passwd> <metastore_db_name> -r metastore-db-dump.sql
Copy the configuration files in /opt/mapr/hive/hive-<version>/conf/ to a location outside the MapR installation directory.
After upgrading, you can reapply changes to the updated Hive installation using the backup.

Stop Hive services.

maprcli node services -name hivemeta -action stop -nodes <list of hive nodes>
maprcli node services -name hs2 -action stop -nodes <list of hive nodes>
maprcli node services -name  hcat -action stop -nodes <list of hive nodes>

Preserving Hive Configuration

Starting from MEP-5.0.1, preserving of user configuration logic is built into Hive.

Procedure

For a minor version update (for example, Hive-2.1-1803 to Hive-2.1-1808), user configuration from a previous version is copied to a folder with an old version timestamp and is also copied to a new version conf folder.
For a major version update (for example, Hive-1.2-1710 to Hive-2.1-1808), user configuration from a previous version is only copied to a folder with an old version timestamp.